Device and method for dismantling road-crossing bailey beam support

Abstract

The invention relates to the technical field of bridge construction, in particular to a road-crossing bailey beam support dismantling device and method.The road-crossing bailey beam support dismantling device comprises a bailey beam body, a pallet fork is arranged under the middle of the bailey beam body and installed on the front portion of a forklift, guide rib plates are fixed to the surfaces of the second extension section, and the edges of the guide rib plates are obliquely arranged; the limiting blocking frames are arranged to be in a V shape capable of being folded and deformed, and the two limiting blocking frames are installed on the two sides of the first extension section correspondingly. The forklift has the beneficial effects that the heightening frame is arranged above the pallet fork, the upper ends of the vertical beams on the two sides of the heightening frame extend upwards to form the first extension section and the second extension section correspondingly, the limiting blocking frames are installed on the two sides of the first extension section correspondingly, and the limiting blocking frames are arranged to be in a foldable V shape; the middle portions of the two limiting blocking frames are arranged on the two sides of a vertical beam on the bailey beam body in a blocking mode respectively, so that position deviation of the bailey beam body in the length direction of the bailey beam body is avoided, and potential safety hazards are reduced.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, specifically to a device and method for dismantling a Bailey bridge support structure. Background Technology

[0002] Bailey bridge supports are widely used in complex and challenging projects such as bridge construction across roads and other obstacles, pipeline installation, and other projects due to their advantages of high load-bearing capacity, flexible assembly, and reusability. After construction, the Bailey bridge supports above the road need to be safely, quickly, and efficiently dismantled to restore the original state.

[0003] In the prior art, Chinese invention with announcement number CN117966624A discloses an automatic Bailey beam dismantling tool, which is equipped with two Bailey beam dismantling trolleys to move and lift the Bailey beam to be dismantled, and is equipped with a digital power control system to realize remote command control of the two Bailey beam dismantling trolleys to move and lift the Bailey beam to be dismantled synchronously.

[0004] However, traditional demolition devices are currently unable to quickly and safely lock the Bailey bridges to be demolished. As a result, during the lifting and moving process, the Bailey bridges cannot maintain a stable vertical balance and move at a uniform speed in the horizontal direction. Furthermore, the demolition of bridges across roads is subject to many restrictions, is difficult, has low efficiency, and poses significant safety hazards, potentially leading to accidents.

[0005] To address these issues, this invention proposes a device and method for dismantling Bailey bridge supports across roads. Summary of the Invention

[0006] The purpose of this invention is to provide a device and method for dismantling Bailey bridge supports across roads, in order to solve the problems mentioned in the background art, such as the Bailey bridge itself being prone to displacement, instability and overturning when it is lifted and moved, the long duration of road occupation construction, and serious impact on vehicle traffic, which pose significant safety hazards.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a device for dismantling a Bailey bridge support, comprising: The Bailey beam body has forks located directly below the center of the body. The forks are mounted on the front of the forklift. A lift rack is located above the forks. The upper ends of the vertical beams on both sides of the lift rack extend upwards, forming extension section one and extension section two, respectively. Extension section one is longer than extension section two and is attached to the side of the Bailey beam body. A guide rib is fixed to the surface of extension section two, and the edge of the guide rib is inclined. The limiting retaining frame is configured as a foldable and deformable "V" shape. There are two such limiting retaining frames, which are respectively installed on both sides of an extension section one. The middle parts of the two limiting retaining frames respectively block both sides of a vertical beam on the Bailey beam body.

[0008] Preferably, two symmetrically distributed square channel steels are fixedly arranged at the bottom of the heightening frame. Two forklift forks are provided as a group and respectively pass through the two square channel steels movably.

[0009] Preferably, a rotating shaft is arranged in the middle of the limiting retaining frame. Shaft rods are arranged at both the upper and lower ends of the limiting retaining frame, and both ends of the shaft rods respectively pass through the two limiting retaining frames movably. Limiting retaining blocks blocking the side surfaces of the limiting retaining frames are fixed at both ends of the shaft rods.

[0010] Preferably, waist-shaped holes are penetrated through the side surface of an extension section one. There are two groups of waist-shaped holes arranged along the length direction of the extension section one, and the two shaft rods respectively pass through the two waist-shaped holes movably.

[0011] Preferably, the cross-section of the extension section one is in a "C" shape. A sleeve is movably sleeved on the outer side of the middle part of the shaft rod, and the sleeve is located in the inner cavity of the extension section one. A tension spring is fixedly connected between the two sleeves.

[0012] Preferably, a locking frame is arranged at the front end of the forklift fork. The locking frame is configured as a "square" shape and is movably sleeved on the outer side of the forklift fork. The locking frame blocks one end of the square channel steel. A stud is penetrated through the upper part of the locking frame by threads. A knob and a pressing plate are respectively fixed at the upper and lower ends of the stud. A handle hole is horizontally penetrated through the middle of the knob.

[0013] Preferably, anti-falling beams are arranged below both ends of the Bailey beam body. A plurality of steel pipe piles distributed at equal intervals are fixed on the lower surface of the anti-falling beam, and the steel pipe piles are fixedly installed on the ground. A cross brace is fixedly installed between adjacent two steel pipe piles.

[0014] A method for demolishing a cross-road Bailey beam support uses the above-mentioned cross-road Bailey beam support demolition device, and specifically includes the following steps: Step 1: Install the heightening frame above the forklift fork; Step 2: Start the forklift, raise the forklift fork, and lift the Bailey beam body with the help of the heightening frame; Step 3: Move the forklift and translate the Bailey beam body into the working area of an external crane; Step 4: Lift the Bailey beam body away; Step 5: Repeat steps 2 to 4 above until all Bailey beam bodies are completely demolished.

[0015] Preferably, in step one, the forks are inserted into the inner cavity of the square channel steel until the front end of the forks extends to the outside of the square channel steel. Then, the locking frame is fitted onto the front end of the forks and the locking frame is in contact with the lift frame. The knob is turned until the pressure plate presses and locks the forks.

[0016] Preferably, in step two, the forklift is located directly below the middle of the Bailey beam body. As the lift frame moves upward and approaches the Bailey beam body, the limiting stop is automatically unfolded and deformed by the pressure of the Bailey beam body until the limiting stop completely crosses the crossbeam at the bottom of the Bailey beam body. Then, the limiting stop automatically folds and deforms back to its original shape under the tension of the tension spring.

[0017] Compared with the prior art, the beneficial effects of the present invention are: This invention features an extension frame positioned above the forks. The upper ends of the vertical beams on both sides of the extension frame extend upwards, forming extension section one and extension section two, respectively. Limiting brackets are installed on both sides of extension section one, and these brackets are foldable "V" shapes. The middle portions of the two limiting brackets respectively block the two sides of a vertical beam on the Bailey beam body, thus preventing the Bailey beam body from shifting along its length. Guide ribs are fixed to the surface of extension section two, with their edges angled. When the extension frame approaches the Bailey beam body from below, the edges of the guide ribs press against the lower crossbeam of the Bailey beam body, ensuring that the side of the Bailey beam body is in close contact with the surface of extension section one. This prevents the Bailey beam body from shifting along its width when the extension frame lifts it, thereby ensuring the relative stability between the Bailey beam body and the extension frame and reducing safety hazards. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the Bailey beam body and the anti-fall beam structure of the present invention; Figure 2 This is a schematic diagram of the Bailey beam body and the raised frame structure of the present invention. Figure 3 This is a side view of the Bailey beam body and the elevated frame structure of the present invention; Figure 4 This is a three-dimensional schematic diagram of the elevated structure of the present invention; Figure 5 This is a schematic diagram of the connection between the limiting stop and the extension section of the present invention; Figure 6 This is a schematic diagram showing the separation of the limiting stop and the extension section of the present invention; Figure 7 This is a three-dimensional schematic diagram of the locking frame structure of the present invention.

[0019] In the diagram: 1. Bailey beam body; 2. Forks; 3. Extension frame; 31. Extension section one; 311. Waist hole; 32. Extension section two; 321. Guide rib; 33. Square channel steel; 4. Shaft; 41. Limiting block; 42. Sleeve; 43. Tension spring; 5. Limiting bracket; 51. Rotating shaft; 6. Locking frame; 61. Stud; 62. Pressure plate; 63. Knob; 64. Handle hole; 7. Fall arrestor beam; 71. Steel pipe pile; 72. Scissor brace. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1 to 7 The present invention provides a technical solution: Example 1: A Bailey bridge support dismantling device, comprising: Bailey bridge body 1 and limiting stop 5.

[0022] Specifically, a fork 2 is installed directly below the center of the Bailey beam body 1. The fork 2 is mounted at the front of the forklift and can be raised and lowered by the forklift to adjust its height. A lift rack 3 is installed above the fork 2, and the specific structure of the lift rack 3 is as follows: Figure 4 As shown, the extension frame 3 is composed of multiple horizontal beams and multiple vertical beams welded and fixed together. The extension frame 3 has a cuboid structure and is placed on the forks 2. The upper ends of the vertical beams on both sides of the extension frame 3 extend upwards, forming extension section 1 31 and extension section 2 32 respectively. Extension section 1 31 is longer than extension section 2 32, and extension section 1 31 fits against the side of the Bailey beam body 1. Figure 3 and Figure 4As shown, the fork 2 rises, causing the lifter 3 to rise as well. When the lifter 3 rises close to the Bailey beam body 1, by moving the fork 2 and the lifter 3 horizontally, the extension section 31 can be brought close to the Bailey beam body 1 until the extension section 31 is in contact with the Bailey beam body 1. Then, the fork 2 and the lifter 3 continue to move upward until the lifter 3 is supported at the bottom of the Bailey beam body 1 and lifts the Bailey beam body 1. A guide rib 321 is fixed on the surface of the extension section 32, and the edge of the guide rib 321 is inclined. During the process of the lifter 3 moving upward and approaching the Bailey beam body 1, the guide rib 321 can guide the Bailey beam body 1, so that the Bailey beam body 1 always tends to approach the extension section 31. When the lifter 3 contacts the Bailey beam body 1, the guide rib 321 can also horizontally limit the Bailey beam body 1 to prevent the Bailey beam body 1 from moving laterally along its own width direction and causing it to separate from the extension section 31. Secondly, the limiting bracket 5 is designed as a foldable and deformable "V" shape. There are two limiting brackets 5, which are respectively installed on both sides of an extension section 31. The middle parts of the two limiting brackets 5 respectively block the two sides of a vertical beam on the Bailey beam body 1. The structure of the limiting bracket 5 is as follows: Figure 5 and Figure 6 As shown, when the limiting stop 5 deforms, the distance between the middle part of the limiting stop 5 and the extension frame 3 will change. When the extension frame 3 approaches the Bailey beam body 1, the crossbeam at the bottom of the Bailey beam body 1 will squeeze the limiting stop 5, forcing the limiting stop 5 to unfold and deform until the middle part of the limiting stop 5 crosses the crossbeam at the bottom of the Bailey beam body 1. At this time, the limiting stop 5 can gradually fold and deform to recover. During the folding and deformation process of the limiting stop 5, the middle part of the limiting stop 5 gradually moves away from the extension section 31. Therefore, the middle part of the limiting stop 5 will block the side of the vertical beam on the Bailey beam body 1, thereby limiting the Bailey beam body 1 in the length direction and preventing the Bailey beam body 1 from shifting its position along its own length direction.

[0023] To prevent the extension frame 3 from detaching from the forks 2, this application further includes two symmetrically distributed square channel steels 33 fixedly installed at the bottom of the extension frame 3, with the forks 2 arranged in pairs, each fork movably passing through one of the two square channel steels 33. Figure 2 and Figure 4 As shown, the square channel steel 33 can prevent the extension frame 3 from shifting in the width direction of the fork 2, thus preventing the two from separating.

[0024] To install the limit stop bracket 5, the present application further has a rotating shaft 51 provided in the middle of the limit stop bracket 5. The setting of the rotating shaft 51 ensures that the limit stop bracket 5 itself can be folded and unfolded. Shaft rods 4 are provided at both the upper and lower ends of the limit stop bracket 5, and both ends of the shaft rod 4 respectively pass through two limit stop brackets 5 movably. Limit stop blocks 41 blocking the sides of the limit stop brackets 5 are fixed at both ends of the shaft rod 4. As Figure 5 and Figure 6 shown, the shaft rod 4 can connect two groups of limit stop brackets 5 together. With the cooperation of the limit stop blocks 41 to limit the limit stop brackets 5, the separation between the limit stop brackets 5 and the shaft rod 4 can be avoided, and thus the distance between the two limit stop brackets 5 can be ensured to remain unchanged all the time. In addition, to improve the limiting effect on the limit stop bracket 5, the limit stop block 41 and the shaft rod 4 are fixed by welding.

[0025] To limit the ends of the limit stop bracket 5, the present application further has two groups of waist-shaped holes 311 provided through the side surface of an extension section one 31 along the length direction of the extension section one 31. Two shaft rods 4 respectively pass through the two waist-shaped holes 311 movably. The shaft rods 4 can move up and down along the length direction of the extension section one 31 in the inner cavity of the waist-shaped holes 311. Therefore, only the upper and lower ends of the limit stop bracket 5 can move in the up and down direction and will not have horizontal offset, thus ensuring that when the limit stop bracket 5 is folded or unfolded, only the middle part of the limit stop bracket 5 will move away from or close to the extension section one 31.

[0026] To enable the limit stop bracket 5 to automatically fold and deform, the cross-section of the extension section one 31 of the present application is in a "C" shape. A sleeve 42 is movably sleeved on the outer side of the middle part of the shaft rod 4, and the sleeve 42 is located in the inner cavity of the extension section one 31. A tension spring 43 is fixedly connected between the two sleeves 42. As Figure 6 shown, the sleeve 42 and the tension spring 43 can be accommodated in the inner cavity of the extension section one 31, thus avoiding collision damage. The tension spring 43 always provides a pulling force, making the limit stop bracket 5 always have a tendency to fold and deform.

[0027] To prevent the lifting frame 3 from sliding along the length direction of the forklift fork 2 and causing the lifting frame 3 to fall off, the present application further has a locking frame 6 provided at the front end of the forklift fork 2. The locking frame 6 is set in a "square" shape and is movably sleeved on the outside of the forklift fork 2. The locking frame 6 blocks one end of the square channel steel 33. A stud 61 is provided through the upper part of the locking frame 6 by thread. A knob 63 and a pressing plate 62 are respectively fixed at the upper and lower ends of the stud 61. A handle hole 64 is horizontally provided through the middle of the knob 63. As Figure 2 and Figure 7As shown, by turning the knob 63, the clamping plate 62 can be pressed onto the fork 2, thereby locking the locking frame 6. At this time, the locking frame 6 stops at the front end of the square channel steel 33, which can prevent the extension frame 3 from sliding along the length of the fork 2 and causing the extension frame 3 to fall off. The handle hole 64 allows the operator to use the handle to increase the torque on the knob 63, thereby improving the locking effect of the locking frame 6.

[0028] To further reduce safety hazards, this application also includes fall arrest beams 7 installed below both ends of the Bailey beam body 1. Multiple steel pipe piles 71, evenly spaced, are fixed to the lower surface of the fall arrest beams 7, and the steel pipe piles 71 are fixedly installed on the ground. A scissor brace 72 is fixedly installed between adjacent steel pipe piles 71. Figure 1 As shown, the anti-fall beam 7 is located below the end of the Bailey beam body 1 and can be used to prevent the Bailey beam body 1 from tilting. Therefore, when the forklift of this device moves the Bailey beam body 1 horizontally, it should pay attention to its own position always being in the middle between the two anti-fall beams 7, so as to further reduce the safety hazard of the Bailey beam body 1 falling.

[0029] This application also discloses a method for dismantling a Bailey bridge support structure, using the aforementioned Bailey bridge support structure dismantling device, specifically including the following steps: Step 1: Install the extension frame 3 above the forks 2; Step 2: Start the forklift, raise the forks 2, and use the lifter 3 to lift the Bailey beam body 1; Step 3: Move the forklift and translate the Bailey beam body 1 into the working area of ​​the external crane; Step 4: Lift the Bailey beam body 1 away; Step 5: Repeat steps 2 to 4 above until all Bailey beam bodies 1 are completely removed.

[0030] In order to install the lift frame 3 and the fork 2, this application also includes, in step one, inserting the fork 2 into the inner cavity of the square channel steel 33 until the front end of the fork 2 extends to the outside of the square channel steel 33, then fitting the locking frame 6 onto the front end of the fork 2 and the locking frame 6 fitting against the lift frame 3, and turning the knob 63 until the pressure plate 62 presses and locks the fork 2.

[0031] To prevent the Bailey beam body 1 from tilting, this application also includes the following feature: in step two, when the forklift is located directly below the middle of the Bailey beam body 1 and the lift frame 3 moves upward and approaches the Bailey beam body 1, the limiting stop 5 is automatically unfolded and deformed by the pressure of the Bailey beam body 1 until the limiting stop 5 completely crosses the crossbeam at the bottom of the Bailey beam body 1, and then the limiting stop 5 automatically folds and deforms back to its original shape under the tension of the tension spring 43.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for dismantling a Bailey bridge support structure, characterized in that: Including: The Bailey beam body (1), a forklift fork (2) is arranged directly below the middle of the Bailey beam body (1), the forklift fork (2) is installed at the front of the forklift, an elevated frame (3) is arranged above the forklift fork (2), the upper ends of the vertical beams on both sides of the elevated frame (3) extend upward respectively, and form extension section one (31) and extension section two (32) respectively. The length of the extension section one (31) is greater than the length of the extension section two (32), and the extension section one (31) fits against the side surface of the Bailey beam body (1). A guiding rib plate (321) is fixed on the surface of the extension section two (32), and the edge of the guiding rib plate (321) is inclined. A limit blocking frame (5), the limit blocking frame (5) is set to be a foldable and deformable "V" shape. There are two limit blocking frames (5), and they are respectively installed on both sides of one extension section one (31). The middle parts of the two limit blocking frames (5) respectively block on both sides of a vertical beam on the Bailey beam body (1).

2. The Bailey bridge support dismantling device according to claim 1, characterized in that: Two symmetrically distributed square steel channels (33) are fixedly arranged at the bottom of the elevated frame (3). The forklift forks (2) are arranged in a group of two, and respectively pass through the two square steel channels (33) movably.

3. The Bailey bridge support dismantling device according to claim 2, characterized in that: A rotating shaft (51) is arranged in the middle of the limit blocking frame (5). Shaft rods (4) are arranged at both the upper and lower ends of the limit blocking frame (5), and both ends of the shaft rods (4) respectively pass through the two limit blocking frames (5) movably. Limit blocking blocks (41) blocking on the side surface of the limit blocking frame (5) are fixed at both ends of the shaft rods (4).

4. The Bailey bridge support dismantling device according to claim 3, characterized in that: A waist-shaped hole (311) is penetrated through the side surface of one extension section one (31). There are two groups of waist-shaped holes (311) arranged along the length direction of the extension section one (31). The two shaft rods (4) respectively pass through the two waist-shaped holes (311) movably.

5. The Bailey bridge support dismantling device according to claim 4, characterized in that: The cross-section of the extension section one (31) is in a "匚" shape. A sleeve (42) is movably sleeved on the outer side of the middle part of the shaft rod (4), and the sleeve (42) is located inside the extension section one (31). A tension spring (43) is fixedly connected between the two sleeves (42).

6. The Bailey bridge support dismantling device according to claim 5, characterized in that: A locking frame (6) is arranged at the front end of the forklift fork (2). The locking frame (6) is set to be a "口" shape and is movably sleeved on the outer side of the forklift fork (2). The locking frame (6) blocks at one end of the square steel channel (33). A stud (61) is penetrated through the upper part of the locking frame (6) by thread. A knob (63) and a pressing plate (62) are respectively fixed at the upper and lower ends of the stud (61). A handle hole (64) is horizontally penetrated through the middle of the knob (63).

7. The Bailey bridge support dismantling device according to claim 6, characterized in that: Anti-falling beams (7) are arranged below both ends of the Bailey beam body (1). A plurality of steel pipe piles (71) distributed at equal intervals are fixed on the lower surface of the anti-falling beam (7), and the steel pipe piles (71) are fixedly installed on the ground. A cross brace (72) is fixedly installed between adjacent two steel pipe piles (71).

8. A method for dismantling a Bailey bridge support structure, characterized in that: Using the device for removing the cross-road Bailey beam support described in claim 7, specifically includes the following steps: Step one: Install the elevated frame (3) above the forklift fork (2). Step two: Start the forklift, make the forklift fork (2) rise and lift the Bailey beam body (1) by means of the elevated frame (3). Step 3: Move the forklift and translate the Bailey beam body (1) to the working area of ​​the external crane; Step 4: Lift the Bailey beam body (1) away; Step 5: Repeat steps 2 to 4 above until all Bailey beam bodies (1) are completely removed.

9. A method for dismantling a Bailey bridge support according to claim 8, characterized in that: In step one, insert the fork (2) into the inner cavity of the square channel steel (33) until the front end of the fork (2) extends to the outside of the square channel steel (33). Then, put the locking frame (6) on the front end of the fork (2) and the locking frame (6) fits against the extension frame (3). Turn the knob (63) until the pressure plate (62) presses and locks the fork (2).

10. A method for dismantling a Bailey bridge support structure according to claim 9, characterized in that: In step two, the forklift is located directly below the middle of the Bailey beam body (1). As the lift frame (3) moves up and approaches the Bailey beam body (1), the limit stop (5) is automatically unfolded and deformed by the pressure of the Bailey beam body (1) until the limit stop (5) completely crosses the crossbeam at the bottom of the Bailey beam body (1). Then, the limit stop (5) automatically folds and deforms under the tension of the tension spring (43).

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